.praise_bubble{
    width:100px;
    height:200px;
    position:relative;
    background-color:#f4f4f4;
  }
  .bubble{
      position: absolute;
      left:50%;
      bottom:0;
  }

  .bl1{
    animation:bubble_y 4s linear 1 forwards ; 
    animation:bubble_big 0.5s linear 1 forwards; 

 }
@keyframes bubble_big_1 {
    0% {
        transform: scale(.3);
    }
    100% {
        transform: scale(1);
    }
  }

@keyframes bubble_y {
    0% {
        margin-bottom:0;
    }
    75% {
        opacity: 1;
    }
    100% {
        margin-bottom:200px;
        opacity: 0;
    }
}

  